/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 2008-2011, Salzburg Research. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * - Redistributions of source code must retain the above copyright notice,
 * this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation
 * and/or other materials provided with the distribution.
 * - Neither the name of the KiWi Project nor the names of its contributors
 * may be used to endorse or promote products derived from this software
 * without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 *
 * Contributor(s):
 * tkurz
 *
 * File Info:
 * User: tkurz
 * Date: 2011/01/19
 * Time: 08:51
 *
 * Project: KiWi2, kiwi-core module
 */

package kiwi.core.webservices.query;

import kiwi.core.api.query.SparqlService;
import org.openrdf.query.QueryLanguage;

import javax.enterprise.context.ApplicationScoped;
import javax.inject.Inject;
import javax.ws.rs.*;
import javax.ws.rs.core.Response;
import java.net.URISyntaxException;

/**
 * User: Thomas Kurz
 * Date: 19.01.11
 * Time: 08:51
 */
@ApplicationScoped
@Path("/query/sparql")
@Produces({"application/json"})
//@Transactional
public class SparqlEndpointWebservice {

	@Inject
	private SparqlService sparqlService;

	@GET
	public Response query(@QueryParam("q") String query, @QueryParam("wt") @DefaultValue("json") String resultType) throws URISyntaxException {
		if(resultType.equals("xml")) {
		   return queryRdfXml(query);
		}
		return queryRdfJson(query);
	}

	@Path("application/rdf+xml")
    @GET
    @Produces("text/rdf+xml")
	public Response queryRdfXml(@QueryParam("q") String query) {
		try {
			return Response.ok().entity(sparqlService.query(QueryLanguage.SPARQL,query,"xml")).build();
		} catch (Exception e) {
			return Response.serverError().build();
		}
	}

	@Path("text/rdf+json")
    @GET
    @Produces("text/rdf+json")
	public Response queryRdfJson(@QueryParam("q") String query) {
		try {
			return Response.ok().entity(sparqlService.query(QueryLanguage.SPARQL,query,"json")).build();
		} catch (Exception e) {
			return Response.serverError().build();
		}
	}

}
